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40. Read the texts of Unit 1 again and make notes under the following headings. Then use your notes to talk about Indoor Environment.

1) The definition of air and its properties.

2) Define IEAQ and name the factors that influence on it.

3) The consequences of inadequate air quality.

4) The rules to follow for indoor air quality improvement.

REVIEW___________________________________Check yourself

PART 1

1. Read the following text and fill in the phrases from the list below.

a) individual sensitivity

e) humidity conditions

b) to identify

f) indoor air pollutants

c) to improve

g) the source of the pollution

d) a result of exposure

Indoor Air Pollution and Health

Health effects from 1) _____ may be experienced soon after exposure or, possibly, years later.

Immediate effects

Immediate effects may show up after a single exposure or repeated exposures. These include irritation of eyes, nose, and throat, headaches, dizziness, and fatigue. Such immediate effects are usually short-term and treatable. Sometimes the treatment is simply eliminating the person's exposure to 2) _____, if it can be identified. Symptoms of some diseases, including asthma, hypersensitivity pneumonitis, and humidifier fever, may also show up soon after exposure to some indoor air pollutants.

The likelihood of immediate reactions to indoor air pollutants depends on several factors. Age and preexisting medical conditions are two important influences. In other cases, whether a person reacts to a pollutant depends on 3) _____, which varies tremendously from person to person. Some people can become sensitized to biological pollutants after repeated exposures, and it appears that some people can become sensitized to chemical pollutants as well.

Certain immediate effects are similar to those from colds or other viral diseases, so it is often difficult to determine if the symptoms are 4) _____ to indoor air pollution. For this reason, it is important to pay attention to the time and place symptoms occur. If the symptoms fade or go away when a person is away from home, for example, an effort should be made 5) _____ indoor air sources that may be possible causes. Some effects may be made worse by an inadequate supply of outdoor air or from the heating, cooling, or 6) _____ prevalent in the home.

Long-term effects

Other health effects may show up either years after exposure has occurred or only after long or repeated periods of exposure. These effects, which include some respiratory diseases, heart disease, and cancer, can be severely debilitating or fatal. It is prudent to try 7) _____ the indoor air quality in your home even if symptoms are not noticeable.

2. Choose the contextual meanings of the words written in bold in the text above.

1) experience

a) испытывать

c) квалификация

b) переживать

d) опыт

2) exposure

a) демонстрация

c) воздействие

b) появление

d) облучение

3) influence

a) влиять

c) воздействовать

b) влияние

d) факторы

4) effort

a) успех

c) попытка

b) объем работ

d) усилие

5) cause

a) вызывать

c) причина

b) дело

d) мотивировать

6) inadequate

a) недостаточный

c) неполноценный

b) неподходящий

d) не отвечающий требованиям

PART 2

3. What these abbreviations mean. Write them in words.

1) RH -…

2) psia - …

3) STP - …

4) IEAQ - …

5) HVAC - …

6) VOC - …

7) deg C - …

8) kg/cu m – …

4. Translate the text into English in written form.

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